Finding the Fourth Proportional to 1,529.02, 2,109.86 and 899.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,529.02 : 2,109.86 = 899.56 : x
2. Step 2: Convert to fraction form
   1,529.02/2,109.86 = 899.56/x
3. Step 3: Cross multiply
   1,529.02x = 2,109.86 × 899.56
4. Step 4: Simplify right side
   1,529.02x = 1,897,945.66
5. Step 5: Solve for x
   x = 1,897,945.66/1,529.02
6. Step 6: Final answer
   x = 1,241.28